Merge branch '5.1' into 5.x

* 5.1:
  You need doctrine/annotations for route annotation support.
  tweak paragraph about multiple Docker Composer files

Author: wouterj

routing.rst

@@ -33,7 +33,7 @@ once in your application to enable them:
 
 .. code-block:: terminal
 
-    $ composer require annotations
+    $ composer require doctrine/annotations
 
 .. versionadded:: 5.2
 

setup/symfony_server.rst

@@ -375,8 +375,8 @@ its location, same as for ``docker-compose``:
 
 .. note::
 
-    If you have more than one docker-compose files you can provide them all
-    separated by ``:``, as explained in the `Docker compose CLI env var reference`_.
+    If you have more than one Docker Compose file, you can provide them all
+    separated by ``:`` as explained in the `Docker compose CLI env var reference`_.
 
 SymfonyCloud Integration
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